Cinder grinder



L.`LAFRENIERE CINDER GRINDER I 2 Sheets-Sheet 1 April 2l, 1,942.

Filed Mrch 12, 1941 April 21, 1942-r` v| LAFRENIERE 2,280,423

Filed MaICh 12, 1941 2 Sheets-Sheet 2 Attorney Patented Apr. ,t 1942 l ,of one-half to Eugene Junction, Vt.

,Lr Bouchard, Essex..

`Ammerlaan March 1:2,` 1941, serial No. 382,994 1 claim. (o1. 83-14) The present inventionrelates to new and useful improvements in cinder grinders and has for one of its" important objects to provide, in a manner as `hereinafter set forth, a machine of this character y,comprising a novelV construction and arrangement whereby the cinders may be crushed or reduced to any desired size.

Another very important object of the invention is to provide a grinder of the aforementioned character `wherein the parts may be expeditiously `adjusted to compensate for wear or renewedwhen necessary.A

` Other objectsof the invention `areto provide a cinder grinder ofthe character described which will be `comparatively simple iin construction,

, strong, durable, highly eiiicient and reliable in use, compachportable ufactured atlow cost. ,i Y

All of the foregoing and still further objects and which may be manand advantages of the invention will lbecome apparent from a study of the following specification, taken in connection with the accompanying drawing wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a view in side elevation of a cinder grinder constructed in accordance with the presy i ent invention.

Figure 2 is vice. i

a view in front elevation of the de- Figure 3 is a View in vertical longitudinal section through the device with the stand omitted.

Figure 4 is across sectionaliview, taken substantiallyon the line 4`4 of Figure 3.

Figure 5 is a detail View in perspective of one be `seen that the embodiment of the inventiony which has `been illustrated comprises a cast iron housing which is designated generally by the ref-` erenceV numeral' I, said -housing being mounted on a suitable stand 2. As illustrated to advantage in Figure 3 of the drawing,` the housing I is openat its top and front.- Mounted on the Alsoxed on the shaft 4 and operable in the housing I is a cast iron drum 6.` Formed in the linV the pockets 'I.

periphery of the drum E and extending from end to end of said drum are segmental recesses or pockets 'I. The pockets I `are for the reception of grinding rods 8 oi circular cross section. The rods `8 are of `suitable metal and fit tightly However, the grinding rods 8 are removable from the pockets I and may be rotatably adjusted therein. The construction and arrangement, it will be noted, is such that the grinding rods v8 project beyondv the periphery of the drum E.

'I'he `bottom 9 of the housing I has formed therein fa transversely elongated opening or slot I IL The lower portions of the end walls of the slot `II) are provided with recesses II (see Figure `springs I5 in the sockets I2 vare engaged with upl the end portions I4 for yieldingly resisting ward `movementof the block I3.` f i Depending `from the bottom 9 of the housing `I adjacent the slot I0 are headed stud bolts I6.

rear portion of the housing I for discharging cinders thereinto is a. hopper 3.

Extending transverselythrough the housing *I and journaled in suitable `bearings provided therefor is a shaft 4. Fixed on one end portion of the shaft 4 is a pulley 5 for receiving a drive Mounted on the bolts I6 is a metallic plate I'I. It will be observed that the plate II extends beneath the block I3. Threadedly mounted at I9 `in the plate I 'I and operatively engaged with th block I3 are adjusting screws I8.

It is thought that the operation of the device `will be readily apparent from `a consideration of the foregoing. Brieiiy, the cinders are deposited in the hopper 3 and flow by gravity there-V from into the rear portion of the housing I between the drum 6 and theback 20 4of saidhousing. As alsoA shown to advantage in Figure 3 of thedrawings, the lower, rear portion ofthe housing I` is formed to provide a concave 2I which is so shaped and arranged that the space i between this portion of the housing and the drum 6 progressively diminishes toward the block I3. It may be well .to here state that the drum 6 rotates in a counter-clockwise direction. The cinders are thus carried downwardly and forwardly and arecrushed on the way. kThe final reduction of the cinders takes place when they are carried between the grinding rods 8 and the stationary block I3. The ground cinders are thrown from the housing I through the open front thereof. Through the medium ofv` the *screws I8, the b1ock`l3 may be adjustedvasdebe understood that changes in the details of n construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

In a grinding machine of the class described including a housing having a longitudinally extending slot in its bottom, bolts depending from the housing adjacent the slot, a plate mounted on said bolts and spaced from the housing, a block mounted for sliding adjustment in the slot, screws threadedly mounted in the plate and engaged against the block for adjusting said lblock vertically, and springs mounted in the Y housing and engaged with the block for yieldingly resisting adjustment of said block upwardly.

LAURAN LAFRENIERE. 

